Why the study?
Does a polar coordinate tagging system improve the quantification of circumferential myocardial displacement compared to Cartesian grid tagging?
Does a polar coordinate tagging system improve the quantification of circumferential myocardial displacement compared to Cartesian grid tagging?
A polar coordinate tagging system is being evaluated as a potential method for quantifying circumferential myocardial displacement in MR strain analysis.
Further validation required before clinical MR strain use; leaves open superiority over Cartesian tagging.
Background Quantitative MR myocardial strain analysis is typically performed using rectilinear or Cartesian grid tagging, and regional contractility is visually assessed by the deformation of the grid1. However, it is difficult to visually isolate circumferential and radial components of displacement and strain from parallel straight lines on short axis images. This study evaluates the potential of a polar coordinate tagging system2 for quantification of circumferential myocardial displacement in a variety of clinical conditions.
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Khan et al. (2014) studied this question.
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